Technical Summary
> When an emergency call is sent to a Public Safety Answering Point
> (PSAP), the device that sends it, as well as any application service
> provider in the path of the call, or access network provider through
> which the call originated may have information about the call, the
> caller or the location which the PSAP may be able to use.
>
> This document describes data structures and a mechanism to convey such
> data to the PSAP. The mechanism uses a Uniform Resource Identifier
> (URI), which may point to either an external resource or an object in
> the body of the SIP message. The mechanism thus allows the data to
> be passed by reference (when the URI points to an external resource)
> or by value (when it points into the body of the message). This
> follows the tradition of prior emergency services standardization
> work where data can be conveyed by value within the call signaling
> (i.e., in body of the SIP message) and also by reference.
Working Group Summary
> There was a good amount of work group participation in contributing,
> discussing, and revising the details that make up the draft. There
> were no significant controversies noted on the list, and all dialogues
> were efficiently attended to with during the development stage. A
> successful development progression is documented in the ECRIT working
> group minutes and in email list archives.
Personnel
> Document shepherd is Marc Linsner.
> Area Director is Alissa Cooper.